Plants and seeds of hybrid corn variety CH718391

Abstract

According to the invention, there is provided seed and plants of the hybrid corn variety designated CH718391. The invention thus relates to the plants, seeds and tissue cultures of the variety CH718391, and to methods for producing a corn plant produced by crossing a corn plant of variety CH718391 with itself or with another corn plant, such as a plant of another variety. The invention further relates to genetic complements of plants of variety CH718391.

1. A seed of the hybrid corn variety CH718391, produced by crossing a first plant of variety I294213 with a second plant of variety I062696, wherein representative seed of said varieties have been deposited under ATCC Accession numbers PTA-7859 and PTA-8685, respectively. 
   
   
     2. A plant of the hybrid corn variety CH718391 grown from the seed of  claim 1 . 
   
   
     3. A plant part of the plant of  claim 2 . 
   
   
     4. The plant part of  claim 3 , further defined as an ear, ovule, pollen or cell. 
   
   
     5. A tissue culture of cells of the plant of  claim 2 . 
   
   
     6. The tissue culture of  claim 5 , wherein cells of the tissue culture are from a tissue selected from the group consisting of leaf, pollen, embryo, root, root tip, anther, silk, flower, kernel, ear, cob, husk, stalk and meristem. 
   
   
     7. A method of producing hybrid corn seed comprising crossing a plant of variety I294213 with a plant of variety I062696, wherein representative seed of variety I294213 and variety I062696 have been deposited under ATCC Accession numbers PTA-7859 and PTA-8685, respectively. 
   
   
     8. The method of  claim 7 , defined as comprising pollinating a plant of inbred variety I294213 with pollen from a plant of variety I062696. 
   
   
     9. The method of  claim 7 , defined as comprising pollinating a plant of inbred variety I062696 with pollen from a plant of variety I294213. 
   
   
     10. A method for producing corn grain comprising growing the plant of  claim 2  until grain is produced and collecting the grain. 
   
   
     11. A method of introducing a heritable trait into hybrid corn variety CH718391 comprising the steps of:
 (a) crossing a first plant of a first inbred corn variety selected from the group consisting of variety I294213 and variety I062696 with another corn plant that heritably carries a locus conferring the trait to produce progeny plants, at least some of which heritably carry the locus, wherein representative samples of seed of variety I294213 and variety I062696 have been deposited under ATCC Accession numbers PTA-7859 and PTA-8685, respectively; 
 (b) selecting progeny plants that heritably carry the locus; 
 (c) crossing selected progeny plants with another plant of the first inbred corn variety to produce next-generation progeny plants at least some of which heritably carry the locus; 
 (d) selecting next-generation progeny plants that heritably carry the locus conferring the trait and exhibit morphological and physiological characteristics of the first inbred corn variety; 
 (e) repeating steps (c) and (d) three or more times to produce at least a first selected progeny plant that heritably carries the locus conferring the trait and exhibits essentially all of the morphological and physiological characteristics of the inbred corn variety; and 
 (f) crossing a progeny plant of step (e) with a plant of the other inbred corn variety of the group consisting of I294213 and I062696 to produce a plant comprising the trait and essentially all of the morphological and physiological characteristics of hybrid corn variety CH718391 when grown under the same environmental conditions. 
 
   
   
     12. The method of  claim 11 , wherein the trait is selected from the group consisting of male sterility, herbicide tolerance, insect resistance, disease resistance, waxy starch, modified fatty acid metabolism, modified phytic acid metabolism, modified carbohydrate metabolism and modified protein metabolism. 
   
   
     13. The method of  claim 12 , further comprising repeating steps (a)-(f) at least once to introduce at least a second locus conferring a trait into hybrid corn variety CH718391, wherein the locus is introduced into variety I294213 or variety I062696, wherein the second trait is selected from the group consisting of male sterility, herbicide tolerance, insect resistance, disease resistance, waxy starch, modified fatty acid metabolism, modified phytic acid metabolism, modified carbohydrate metabolism and modified protein metabolism. 
   
   
     14. A plant produced by the method of  claim 11  or a part thereof. 
   
   
     15. A plant produced by the method of  claim 13  or a part thereof. 
   
   
     16. A method of introducing a desired trait into hybrid corn variety CH718391 comprising the steps of:
 (a) introducing a transgene conferring the trait into a variety selected from the group consisting of I294213 and I062696 to produce a transgenic plant heritably carrying the trait, wherein representative samples of seed of variety I294213 and variety I062696 have been deposited under ATCC Accession numbers PTA-7859 and PTA-8685, respectively; and 
 (b) crossing the transgenic plant or an isogenic progeny plant thereof with a plant of the other inbred corn variety to produce seed of the hybrid corn variety CH718391 that heritably carries and expresses the transgene and otherwise has essentially all of the morphological and physiological characteristics of hybrid corn variety CH718391 when grown under the same environmental conditions. 
 
   
   
     17. The method of  claim 16 , wherein the desired trait selected from the group consisting of male sterility, herbicide tolerance, insect resistance, disease resistance, waxy starch, modified fatty acid metabolism, modified phytic acid metabolism, modified carbohydrate metabolism and modified protein metabolism. 
   
   
     18. The method of  claim 16 , further comprising repeating steps (a) and (b) at least once to introduce at least a second trait into hybrid corn variety CH718391, wherein the second trait is selected from the group consisting of male sterility, herbicide tolerance, insect resistance, disease resistance, waxy starch, modified fatty acid metabolism, modified phytic acid metabolism, modified carbohydrate metabolism and modified protein metabolism. 
   
   
     19. A plant produced by the method of  claim 16  or a part thereof. 
   
   
     20. A plant produced by the method of  claim 18  or a part thereof. 
   
   
     21. A method of producing an inbred corn plant derived from the hybrid corn variety CH718391, the method comprising the steps of:
 (a) preparing a progeny plant derived from hybrid corn variety CH718391 by crossing the plant of  claim 2  with a second corn plant; 
 (b) crossing the progeny plant with itself or a second plant to produce a seed of a progeny plant of a subsequent generation; 
 (c) growing a progeny plant of a subsequent generation from said seed and crossing the progeny plant of a subsequent generation with itself or a second plant; and 
 (d) repeating steps (b) and (c) for an addition 3-10 generations to produce an inbred corn plant derived from the hybrid corn variety CH718391.